Back for a seating structure



FIG. 1 is a perspective view of a back for a seating structure;

FIG. 2 is a right side view of the back shown in FIG. 1;

FIG. 3 is a front view of the back shown in FIG. 1;

FIG. 4 is a rear view of the back shown in FIG. 1;

FIG. 5 is a left side view of the back shown in FIG. 1;

FIG. 6 is a top view of the back shown in FIG. 1; and,

FIG. 7 is a bottom view of the back shown in FIG. 1. 

The ornamental design for a back for a seating structure, as shown and described. 